1 # Process this file with autoreconf to produce a configure script.
4 AC_INIT(package-unused, version-unused,, libstdc++)
5 AC_CONFIG_SRCDIR(src/ios.cc)
6 AC_CONFIG_HEADER(config.h)
8 # This works around the fact that libtool configuration may change LD
9 # for this particular configuration, but some shells, instead of
10 # keeping the changes in LD private, export them just because LD is
11 # exported. Only used at the end of this file.
12 ### am handles this now? ORIGINAL_LD_FOR_MULTILIBS=$LD
14 # Find the rest of the source tree framework.
15 AM_ENABLE_MULTILIB(, ..)
17 # Gets build, host, target, *_vendor, *_cpu, *_os, etc.
19 # You will slowly go insane if you do not grok the following fact: when
20 # building v3 as part of the compiler, the top-level /target/ becomes the
21 # library's /host/. configure then causes --target to default to --host,
22 # exactly like any other package using autoconf. Therefore, 'target' and
23 # 'host' will always be the same. This makes sense both for native and
24 # cross compilers, just think about it for a little while. :-)
26 # Also, if v3 is being configured as part of a cross compiler, the top-level
27 # configure script will pass the "real" host as $with_cross_host.
29 # Do not delete or change the following two lines. For why, see
30 # http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
32 target_alias=${target_alias-$host_alias}
34 # Handy for debugging:
35 #AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5
37 if test "$build" != "$host"; then
38 # We are being configured with some form of cross compiler.
39 GLIBCXX_IS_NATIVE=false
40 case "$host","$target" in
41 # Darwin crosses can use the host system's libraries and headers,
42 # because of the fat library support. Of course, it must be the
43 # same version of Darwin on both sides. Allow the user to
44 # just say --target=foo-darwin without a version number to mean
45 # "the version on this system".
46 *-*-darwin*,*-*-darwin*)
47 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
48 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
49 if test $hostos = $targetos -o $targetos = darwin ; then
50 GLIBCXX_IS_NATIVE=true
59 GLIBCXX_IS_NATIVE=true
62 # Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the
63 # following is magically included in AUTOMAKE_OPTIONS in each Makefile.am.
64 # 1.x: minimum required version
65 # no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch
66 # of other PACKAGE_* variables will, however, and there's nothing
67 # we can do about that; they come from AC_INIT).
68 # foreign: we don't follow the normal rules for GNU packages (no COPYING
69 # file in the top srcdir, etc, etc), so stop complaining.
70 # no-dependencies: turns off auto dependency generation (just for now)
71 # no-dist: we don't want 'dist' and related rules.
72 # -Wall: turns on all automake warnings...
73 # -Wno-portability: ...except this one, since GNU make is now required.
74 AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dependencies no-dist -Wall -Wno-portability -Wno-override])
75 AH_TEMPLATE(PACKAGE, [Name of package])
76 AH_TEMPLATE(VERSION, [Version number of package])
78 # -fno-builtin must be present here so that a non-conflicting form of
79 # std::exit can be guessed by AC_PROG_CXX, and used in later tests.
81 save_CXXFLAGS="$CXXFLAGS"
82 CXXFLAGS="$CXXFLAGS -fno-builtin"
85 CXXFLAGS="$save_CXXFLAGS"
87 # Runs configure.host, and assorted other critical bits. Sets
88 # up critical shell variables.
91 if test "x${with_newlib}" != "xyes"; then
96 AC_SUBST(enable_shared)
97 AC_SUBST(enable_static)
99 # Eliminate -lstdc++ addition to postdeps for cross compiles.
100 postdeps_CXX=`echo " $postdeps_CXX " | sed 's, -lstdc++ ,,g'`
102 # Possibly disable most of the library.
103 ## TODO: Consider skipping unncessary tests altogether in this case, rather
104 ## than just ignoring the results. Faster /and/ more correct, win win.
105 GLIBCXX_ENABLE_HOSTED
107 # Enable compiler support that doesn't require linking.
108 GLIBCXX_ENABLE_SJLJ_EXCEPTIONS
109 GLIBCXX_ENABLE_PCH($is_hosted)
110 GLIBCXX_ENABLE_THREADS
111 GLIBCXX_ENABLE_ATOMIC_BUILTINS
112 GLIBCXX_ENABLE_DECIMAL_FLOAT
114 # Checks for compiler support that doesn't require linking.
115 GLIBCXX_CHECK_COMPILER_FEATURES
117 # Enable all the variable C++ runtime options that don't require linking.
118 GLIBCXX_ENABLE_CSTDIO
119 GLIBCXX_ENABLE_CLOCALE
120 GLIBCXX_ENABLE_ALLOCATOR
121 GLIBCXX_ENABLE_CHEADERS($c_model) dnl c_model from configure.host
122 GLIBCXX_ENABLE_LONG_LONG([yes])
123 GLIBCXX_ENABLE_WCHAR_T([yes])
124 GLIBCXX_ENABLE_C99([yes])
125 GLIBCXX_ENABLE_CONCEPT_CHECKS([no])
126 GLIBCXX_ENABLE_DEBUG_FLAGS(["-g3 -O0"])
127 GLIBCXX_ENABLE_DEBUG([no])
128 GLIBCXX_ENABLE_PARALLEL([yes])
129 GLIBCXX_ENABLE_CXX_FLAGS
130 GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING([no])
131 GLIBCXX_ENABLE_EXTERN_TEMPLATE([yes])
133 # Checks for operating systems support that doesn't require linking.
134 GLIBCXX_CHECK_SYSTEM_ERROR
136 # For the streamoff typedef.
137 GLIBCXX_CHECK_INT64_T
142 # For showmanyc_helper().
143 AC_CHECK_HEADERS(sys/ioctl.h sys/filio.h)
145 GLIBCXX_CHECK_S_ISREG_OR_S_IFREG
148 AC_CHECK_HEADERS(sys/uio.h)
151 # For C99 support to TR1.
152 GLIBCXX_CHECK_C99_TR1
154 # For the EOF, SEEK_CUR, and SEEK_END integer constants.
155 GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS
157 # For gettimeofday support.
158 GLIBCXX_CHECK_GETTIMEOFDAY
160 # For clock_gettime, nanosleep and sched_yield support.
161 # NB: The default is [no], because otherwise it requires linking.
162 GLIBCXX_ENABLE_LIBSTDCXX_TIME([no])
164 # For gthread support
165 GLIBCXX_CHECK_GTHREADS
167 # For copy-assignable gthreads types
168 GLIBCXX_GTHREADS_CXX11_COPY_ASSIGN
172 # Check for available headers.
173 AC_CHECK_HEADERS([endian.h execinfo.h float.h fp.h ieeefp.h inttypes.h \
174 locale.h machine/endian.h machine/param.h nan.h stdint.h stdlib.h string.h \
175 strings.h sys/ipc.h sys/isa_defs.h sys/machine.h sys/param.h \
176 sys/resource.h sys/sem.h sys/stat.h sys/time.h sys/types.h unistd.h \
179 # Only do link tests if native. Else, hardcode.
180 if $GLIBCXX_IS_NATIVE; then
182 # We can do more elaborate tests that assume a working linker.
185 GLIBCXX_CHECK_LINKER_FEATURES
186 GLIBCXX_CHECK_MATH_SUPPORT
187 GLIBCXX_CHECK_STDLIB_SUPPORT
189 # For /dev/random and /dev/urandom for TR1.
190 GLIBCXX_CHECK_RANDOM_TR1
200 # This lets us hard-code the functionality we know we'll have in the cross
201 # target environment. "Let" is a sugar-coated word placed on an especially
202 # dull and tedious hack, actually.
204 # Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros
205 # that involve linking, can't be used:
206 # "cannot open sim-crt0.o"
207 # "cannot open crt0.o"
208 # etc. All this is because there currently exists no unified, consistent
209 # way for top level CC information to be passed down to target directories:
210 # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc.
211 # When all of that is done, all of this hokey, excessive AC_DEFINE junk for
212 # crosses can be removed.
214 # If Canadian cross, then don't pick up tools from the build directory.
215 # Used only in GLIBCXX_EXPORT_INCLUDES.
216 if test -n "$with_cross_host" &&
217 test x"$build_alias" != x"$with_cross_host" &&
218 test x"$build" != x"$target";
225 # Construct crosses by hand, eliminating bits that need ld...
226 # GLIBCXX_CHECK_MATH_SUPPORT
228 # First, test for "known" system libraries. We may be using newlib even
229 # on a hosted environment.
230 if test "x${with_newlib}" = "xyes"; then
231 os_include_dir="os/newlib"
232 AC_DEFINE(HAVE_HYPOT)
234 # GLIBCXX_CHECK_STDLIB_SUPPORT
235 AC_DEFINE(HAVE_STRTOF)
237 AC_DEFINE(HAVE_ACOSF)
238 AC_DEFINE(HAVE_ASINF)
239 AC_DEFINE(HAVE_ATAN2F)
240 AC_DEFINE(HAVE_ATANF)
241 AC_DEFINE(HAVE_CEILF)
243 AC_DEFINE(HAVE_COSHF)
245 AC_DEFINE(HAVE_FABSF)
246 AC_DEFINE(HAVE_FLOORF)
247 AC_DEFINE(HAVE_FMODF)
248 AC_DEFINE(HAVE_FREXPF)
249 AC_DEFINE(HAVE_LDEXPF)
250 AC_DEFINE(HAVE_LOG10F)
252 AC_DEFINE(HAVE_MODFF)
255 AC_DEFINE(HAVE_SINHF)
256 AC_DEFINE(HAVE_SQRTF)
258 AC_DEFINE(HAVE_TANHF)
260 AC_DEFINE(HAVE_ICONV)
265 # At some point, we should differentiate between architectures
266 # like x86, which have long double versions, and alpha/powerpc/etc.,
267 # which don't. For the time being, punt.
268 if test x"long_double_math_on_this_cpu" = x"yes"; then
269 AC_DEFINE(HAVE_ACOSL)
270 AC_DEFINE(HAVE_ASINL)
271 AC_DEFINE(HAVE_ATAN2L)
272 AC_DEFINE(HAVE_ATANL)
273 AC_DEFINE(HAVE_CEILL)
275 AC_DEFINE(HAVE_COSHL)
277 AC_DEFINE(HAVE_FABSL)
278 AC_DEFINE(HAVE_FLOORL)
279 AC_DEFINE(HAVE_FMODL)
280 AC_DEFINE(HAVE_FREXPL)
281 AC_DEFINE(HAVE_LDEXPL)
282 AC_DEFINE(HAVE_LOG10L)
284 AC_DEFINE(HAVE_MODFL)
286 AC_DEFINE(HAVE_SINCOSL)
288 AC_DEFINE(HAVE_SINHL)
289 AC_DEFINE(HAVE_SQRTL)
291 AC_DEFINE(HAVE_TANHL)
295 # Check for _Unwind_GetIPInfo.
296 GCC_CHECK_UNWIND_GETIPINFO
299 GCC_LINUX_FUTEX([AC_DEFINE(HAVE_LINUX_FUTEX, 1, [Define if futex syscall is available.])])
301 GCC_HEADER_STDINT(include/gstdint.h)
303 # This depends on GLIBCXX CHECK_LINKER_FEATURES, but without it assumes no.
304 GLIBCXX_ENABLE_SYMVERS([yes])
305 AC_SUBST(libtool_VERSION)
307 GLIBCXX_ENABLE_VISIBILITY([yes])
311 powerpc*-*-linux* | \
317 #if !defined __LONG_DOUBLE_128__ || (defined(__sparc__) && defined(__arch64__))
318 #error no need for long double compatibility
320 ], [ac_ldbl_compat=yes], [ac_ldbl_compat=no])
321 if test "$ac_ldbl_compat" = yes; then
322 AC_DEFINE([_GLIBCXX_LONG_DOUBLE_COMPAT],1,
323 [Define if compatibility should be provided for -mlong-double-64.])
324 port_specific_symbol_files="\$(top_srcdir)/config/os/gnu-linux/ldbl-extra.ver"
327 GLIBCXX_CONDITIONAL(GLIBCXX_LDBL_COMPAT, test $ac_ldbl_compat = yes)
329 # This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE.
330 GLIBCXX_CONFIGURE_TESTSUITE
332 # Define documentation rules conditionally.
334 # See if makeinfo has been installed and is modern enough
335 # that we can use it.
336 ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version],
337 [GNU texinfo.* \([0-9][0-9.]*\)],
338 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
339 AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes")
342 AC_CHECK_PROG([DOXYGEN], doxygen, yes, no)
343 AC_CHECK_PROG([DOT], dot, yes, no)
346 AC_CHECK_PROG([XSLTPROC], xsltproc, yes, no)
347 AC_CHECK_PROG([XMLLINT], xmllint, yes, no)
348 GLIBCXX_CONFIGURE_DOCBOOK
350 # Check for xml/html dependencies.
351 AM_CONDITIONAL(BUILD_XML,
352 test $ac_cv_prog_DOXYGEN = "yes" &&
353 test $ac_cv_prog_DOT = "yes" &&
354 test $ac_cv_prog_XSLTPROC = "yes" &&
355 test $ac_cv_prog_XMLLINT = "yes" &&
356 test $glibcxx_stylesheets = "yes")
358 AM_CONDITIONAL(BUILD_HTML,
359 test $ac_cv_prog_DOXYGEN = "yes" &&
360 test $ac_cv_prog_DOT = "yes" &&
361 test $ac_cv_prog_XSLTPROC = "yes" &&
362 test $ac_cv_prog_XMLLINT = "yes" &&
363 test $glibcxx_stylesheets = "yes")
365 # Check for man dependencies.
366 AM_CONDITIONAL(BUILD_MAN,
367 test $ac_cv_prog_DOXYGEN = "yes" &&
368 test $ac_cv_prog_DOT = "yes")
370 # Check for pdf/epub dependencies.
371 AC_CHECK_PROG([DBLATEX], dblatex, yes, no)
372 AC_CHECK_PROG([PDFLATEX], pdflatex, yes, no)
373 AM_CONDITIONAL(BUILD_PDF,
374 test $ac_cv_prog_DBLATEX = "yes" &&
375 test $ac_cv_prog_PDFLATEX = "yes")
377 AC_CHECK_PROG([RUBY], ruby, yes, no)
378 AC_CHECK_PROG([DBTOEPUB], dbtoepub, yes, no)
379 AM_CONDITIONAL(BUILD_EPUB,
380 test $ac_cv_prog_RUBY = "yes" &&
381 test $ac_cv_prog_DBTOEPUB = "yes")
384 # Propagate the target-specific source directories through the build chain.
385 ATOMICITY_SRCDIR=config/${atomicity_dir}
386 ATOMIC_WORD_SRCDIR=config/${atomic_word_dir}
387 ATOMIC_FLAGS=${atomic_flags}
388 CPU_DEFINES_SRCDIR=config/${cpu_defines_dir}
389 OS_INC_SRCDIR=config/${os_include_dir}
390 ERROR_CONSTANTS_SRCDIR=config/${error_constants_dir}
391 ABI_TWEAKS_SRCDIR=config/${abi_tweaks_dir}
392 AC_SUBST(ATOMICITY_SRCDIR)
393 AC_SUBST(ATOMIC_WORD_SRCDIR)
394 AC_SUBST(ATOMIC_FLAGS)
395 AC_SUBST(CPU_DEFINES_SRCDIR)
396 AC_SUBST(ABI_TWEAKS_SRCDIR)
397 AC_SUBST(OS_INC_SRCDIR)
398 AC_SUBST(ERROR_CONSTANTS_SRCDIR)
401 # Determine cross-compile flags and AM_CONDITIONALs.
402 #AC_SUBST(GLIBCXX_IS_NATIVE)
403 #AM_CONDITIONAL(CANADIAN, test $CANADIAN = yes)
404 GLIBCXX_EVALUATE_CONDITIONALS
408 if test ${multilib} = yes; then
409 multilib_arg="--enable-multilib"
414 # Export all the install information.
415 GLIBCXX_EXPORT_INSTALL_INFO
417 # Export all the include and flag information to Makefiles.
418 GLIBCXX_EXPORT_INCLUDES
421 if test "$enable_shared" = yes; then
422 LIBSUPCXX_PICFLAGS="-prefer-pic"
426 AC_SUBST(LIBSUPCXX_PICFLAGS)
428 dnl In autoconf 2.5x, AC_OUTPUT is replaced by four AC_CONFIG_* macros,
429 dnl which can all be called multiple times as needed, plus one (different)
430 dnl AC_OUTPUT macro. This one lists the files to be created:
431 AC_CONFIG_FILES(Makefile)
432 AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags])
433 AC_CONFIG_FILES([scripts/extract_symvers],[chmod +x scripts/extract_symvers])
435 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
436 # that multilib installs will end up installed in the correct place.
437 # The testsuite needs it for multilib-aware ABI baseline files.
438 # To work around this not being passed down from config-ml.in ->
439 # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
440 # append it here. Only modify Makefiles that have just been created.
442 # Also, get rid of this simulated-VPATH thing that automake does.
443 AC_CONFIG_FILES(AC_FOREACH([DIR], glibcxx_SUBDIRS, [DIR/Makefile ]),
444 [cat > vpsed$$ << \_EOF
445 s!`test -f '$<' || echo '$(srcdir)/'`!!
447 sed -f vpsed$$ $ac_file > tmp$$
450 echo 'MULTISUBDIR =' >> $ac_file
452 . ${multi_basedir}/config-ml.in
453 AS_UNSET([ml_norecursion])
456 AC_CONFIG_COMMANDS([generate-headers],
457 [(cd include && ${MAKE-make} pch_build= )])
459 dnl And this actually makes things happen: